The 33-year-old mother and her 8-year-old daughter jumped through a window.

"My niece ran to a neighbor's house," said a family member.

But four others were trapped inside the home.

Firefighters pulled the dad and the couple's 3 other daughters. They had no pulse, and all had to be given CPR.

The father, the 8-year-old twin sister, and her four-year-old sister all died. The 11-year-old is in grave condition as of Thursday night.

The family dog was found shivering inside the house more than four hours after the fire began.
Chief Marc Bashoor, Prince George's Co. Fire, "The only indication is, this was nothing more than a tragic accidental fire."

One that perhaps, could have been prevented. There were no smoke alarms.
Bashoor, "that particular fact is very sad and frustrating for me. We shouldn't have any more fires without a smoke alarm.